body {
    min-width: 320px;
    max-width: 750px;
    width: 10rem;
    margin: 0 auto !important;
    line-height: 1.5;
    font-family: Arial,Helvetica,STHeiTi,sans-serif;
    background: #f2f2f2;
    color: #333;
}
article, aside, blockquote, body, button, code, dd, dialog, div, dl, dt, fieldset, figure, footer, form, h1, h2, h3, h4, h5, h6, header, hgroup, input, legend, li, nav, ol, p, pre, section, td, textarea, th, ul,a{
    margin: 0;
    padding: 0;
}
a{
    color: #333;
    text-decoration: none;
}
i{
    font-style:normal;
}
ul,ol{
    list-style: none;
}
@media screen and (min-width:750px){
    html{
        font-size: 75px!important;
    }
}